feat(学生): 添加学生课程管理功能

- 新增我的课程页面及路由
- 实现课程列表和详情查看功能
- 更新导航链接指向新页面
- 添加成绩详情模态框
- 完善相关后端接口和服务

backend/controllers/studentController.js

@@ -2,6 +2,34 @@ const StudentService = require('../services/studentService');
 const { success, error } = require('../utils/response');
 
 class StudentController {
+    static async getCourses(req, res) {
+        try {
+            const userId = req.session.user.id;
+            const data = await StudentService.getStudentCourses(userId);
+            success(res, data);
+        } catch (err) {
+            if (err.message === '学生信息不存在') {
+                return error(res, err.message, 404);
+            }
+            console.error('Get Courses Error:', err);
+            error(res, '服务器错误');
+        }
+    }
+
+    static async getCourseDetails(req, res) {
+        try {
+            const courseId = req.params.id;
+            const data = await StudentService.getCourseDetails(courseId);
+            success(res, data);
+        } catch (err) {
+            if (err.message === '课程不存在') {
+                return error(res, err.message, 404);
+            }
+            console.error('Get Course Details Error:', err);
+            error(res, '服务器错误');
+        }
+    }
+
     static async getGrades(req, res) {
         try {
             const userId = req.session.user.id;

backend/models/Course.js

@@ -12,6 +12,31 @@ class Course {
         const rows = await db.query('SELECT * FROM courses WHERE id = ?', [id]);
         return rows[0];
     }
+
+    static async findDetailsById(id) {
+        const sql = `
+            SELECT c.*, u.name as teacher_name, cl.class_name
+            FROM courses c
+            JOIN users u ON c.teacher_id = u.id
+            JOIN classes cl ON c.class_id = cl.id
+            WHERE c.id = ?
+        `;
+        const rows = await db.query(sql, [id]);
+        return rows[0];
+    }
+
+    static async findByStudentId(studentId) {
+        const sql = `
+            SELECT c.*, u.name as teacher_name
+            FROM courses c
+            JOIN classes cl ON c.class_id = cl.id
+            JOIN students s ON cl.class_name = s.class
+            JOIN users u ON c.teacher_id = u.id
+            WHERE s.id = ?
+            ORDER BY c.course_code
+        `;
+        return await db.query(sql, [studentId]);
+    }
 }
 
 module.exports = Course;

backend/models/Score.js

@@ -22,7 +22,7 @@ class Score {
                    s.usual_score, s.midterm_score, s.final_score, s.total_score as score,
                    s.grade_point, s.grade_level, s.created_at, s.remark,
                    c.course_code, c.course_name, c.credit, c.semester,
-                   u.name as teacher_name, u.email as teacher_email,
+                   u.name as teacher_name,
                    st.id as student_number, st.class as class_name
             FROM grades s
             JOIN courses c ON s.course_id = c.id

backend/routes/student.js

@@ -3,6 +3,8 @@ const router = express.Router();
 const StudentController = require('../controllers/studentController');
 const { requireAuth, requireRole } = require('../middleware/auth');
 
+router.get('/courses', requireAuth, requireRole(['student']), StudentController.getCourses);
+router.get('/courses/:id', requireAuth, requireRole(['student']), StudentController.getCourseDetails);
 router.get('/grades', requireAuth, requireRole(['student']), StudentController.getGrades);
 router.get('/grades/:id', requireAuth, requireRole(['student']), StudentController.getGradeDetails);
 

backend/server.js

@@ -96,6 +96,9 @@ app.get('/dashboard', requirePageAuth, (req, res) => {
 app.get('/student/dashboard', requirePageAuth, requirePageRole(['student']), (req, res) => {
     res.sendFile(path.join(__dirname, '../frontend/views/student/dashboard.html'));
 });
+app.get('/student/my-courses', requirePageAuth, requirePageRole(['student']), (req, res) => {
+    res.sendFile(path.join(__dirname, '../frontend/views/student/my_courses.html'));
+});
 app.get('/student/profile', requirePageAuth, requirePageRole(['student']), (req, res) => {
     res.sendFile(path.join(__dirname, '../frontend/views/student/profile.html'));
 });

backend/services/studentService.js

@@ -1,7 +1,27 @@
 const Score = require('../models/Score');
 const Student = require('../models/Student');
 
+const Course = require('../models/Course');
+
 class StudentService {
+    static async getStudentCourses(userId) {
+        const student = await Student.findById(userId);
+        if (!student) {
+            throw new Error('学生信息不存在');
+        }
+
+        const courses = await Course.findByStudentId(userId);
+        return courses;
+    }
+
+    static async getCourseDetails(courseId) {
+        const course = await Course.findDetailsById(courseId);
+        if (!course) {
+            throw new Error('课程不存在');
+        }
+        return course;
+    }
+
     static async getStudentGrades(userId) {
         // 先通过 userId 获取 studentId
         // 假设 users.id = students.id，或者通过 user_id 关联